Voltio
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Definición
La unidad de diferencia de potencial eléctrico (tensión) del SI, definida como un julio de energía por culombio de carga (1 V = 1 J/C).
Explicación
Named after Alessandro Volta, inventor of the electrochemical battery. A standard AA battery provides 1.5 V; a household outlet delivers 120 V (US) or 230 V (Europe); a lightning bolt can reach 300 million volts. Voltage drives current through a circuit — doubling voltage doubles current if resistance stays constant (Ohm's law: V = IR).
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Kilogramo
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Segundo
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Amperio
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